Insecta - Ephemeroptera - Hexagenitidae
Synonyms: Ephemeropsidae Cockerell 1927, Paedephemeridae Lameere 1917, Stenodicranidae Demoulin 1954
Parent taxon: Triangulifera according to R. Willmann 2007
See also Carpenter 1992, Demoulin 1954, Demoulin 1970, Huang et al. 2007, McCafferty 1990, Sinitshenkova 1986 and Tshernova 1961
Sister taxa: Aenigmephemeridae, Alulata, Aphelophlebodidae, Babidae, Clephemera, Costalimella nordestina, Durlophlebia, Epeoromimidae, Ephemera oeningensis, Euplectoptera, Heptagenioidea, Libanoephemera, Metretopus henningseni, Parabaetis, Schistonota, Triplosobidae, Turfanerella, Protereismidae
Subtaxa: Baikalogenites Caenoephemera Costalimella Cratohexagenites Ephemeropsis Epicharmeropsis Hexagenites Hexameropsis Mongologenites Protoligoneuria Shantous Siberiogenites
Type: Hexagenites
Ecology:
Distribution:
• Cretaceous of Algeria (1 collection), Brazil (13), Canada (1: Newfoundland and Labrador), China (27), Mongolia (6), Myanmar (1), the Russian Federation (36), Ukraine (3)
• Jurassic of China (1), Germany (8), Mongolia (3), the Russian Federation (2)
Total: 102 collections including 111 occurrences